Heavy Weight, high quality, perfect precision, ultra smooth for extremely accurate and balanced BB's.Precisely made with minimal variation (+-0.01mm), weight precisely at 0.2g (+-0.01g), these are designed for high quality guns with a rating level that exceeds most other brands available on the Market.The MetalTac BB's excel in accuracy and durability, making them one of the best BB's in the market.Each bag contains 5,000 rounds and in this special package each box contains a total sum of 125,000 .20 gram BB's!